Mechanical disintegration of ores



No. 62|,274. L Patented Mar. l4,l899. D. DKEEFE. MEIEHANICAL DISINTEGBATION OF OBES.

(Application filed Jan. 13, 1898.) ("0 Model.)

2 Shoets-Sheet I.

c D x m F 5 0 IQ Q m E No. 62l,274. Patented Mar. l4, I899.

. D. UKEEFE.

MECHANICAL DISINTEGRATIUN 0F ORES.

(Application filed Jan. 13, 1898.) (No Model.) 2 Sheets-Sheet 2.

WITNESSES: s. H {I I /A:VEN7'OH %MMOL JWMZ ATTORNEY.

NlTED .TATES DANIEL OKEEFE, OF BOSTON, MASSAOHUSETTS.

MECHANICAL DISINTEGRATION OF ORES.

SPECIFICATION forming part Of Letters Patent No. 621,274, dated March 14, 1899 Application filed January 13,1898. Serial No. 666,584. (No model.)

To (LZZ whom it may concern.-

Be it known that I, DANIEL OKEEFE, a

citizen of the United States, residing at Bos-' ton, in the county of Sufiolk and State of Massachusettshave invented certain new and useful Improvements in the Mechanical Disintegration of Ores, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to the mechanical disintegration of unrefractory ores; and the object of this invention is to separate the integral parts of such ores in an economical and efficient manner. I accomplish this result by the mechanisms shown in the accompanying drawings, in which Figure 1 is a perspective View of the essential parts of this mechanism. Fig. 2 is a side elevation of the rearward portion of one of the beater-arms and the dash-pot connected therewith. Fig. 3 is avertical transverse sec,- tion of part of one set of the beater-arms on the line 00 azand the dash-pot connected there with on the line 3 y in Fig. 2. Fig. lis a vertical transverse section of part of another set of the beater-arms on the same line 00 m. Fig. 5 is a horizontal section of the dash-pot on the line 2' .e in Fig. 3. I

A represents the main heaters, of which any number may be employed, which are fulcrumed on the stationary shaft B, which is supported at its ends by any suitable frammg.

0 represents a cam-shaft, which is rotated by any suitable means, and c are cams on the shaft which engage with the rearward-projecting parts a of the heaters A, so as to give these heaters a reciprocating motion similar to the opening and shutting of the blades in a j ackknife. The cams care so located about the shaft 0 as to'cause the heaters A A, &c., to rise and fall successively one after another from the center outwardly to both sides. Placed alternately between the heaters AA, &c., and lying in an approximately horizontal position are the reciprocating bars D D, &c., the rearward ends of which are hooked over the stationary shaft B in such a manner as to allow of their reciprocating back and forth freely in a horizontal direction. The opposite ends of these bars D D, &c., are carried by the cams E on the cam-shaft e, which is also rotated by suitable means. These cams E are so located around the shaft as to cause the bars D D, &c., to reciprocate alternately both vertically and horizontally with the next adjacent similar bars, but do not necessarily limit the rate or time of reciprocation to coincide with the motions of the heaters A A, 850. The double alternate lines on the sides of the heaters A and bars D represent grooves g, inclined at diametrically opposite angles on the heaters A to those on the next adjacent bars D, and while I do not wish to limit my invention to bars and heaters provided with these grooves, as they are not necessarily essential to the successful accomplishment of disintegration, I prefer to equip these bars in this manner. The spaces between the widest parts of the bars D D, which are preferably at or near the bottom edges thereof, (see Fig. 3,) are approximately equal to this width of those bars; but by means of the collars f f 8210., interposed between the heaters A and the bars D, where they rest on the stationary shaft B, this space can be increased or decreased by removing or inserting collars ff, &c. This will also change the relative amount of space intervening between the inclined sides of the heaters A when-they are in a horizontal position and the oppositely-inclined side of)the next adjacent bars D. (Shown in Fig. 3.

Near the rearward end of the heaters A and situated upon the upper sides thereof are the vertical projections a for the purpose of preventing any of the ore from passing over this end of the beatersand bars and to cause it to pass down between the heaters and bars instead. Upon the under side of the heaters A and nearly vertically under the projections just referred to are another set of projections a Fig. 2, provided with holes a through which are hooked rods H, depending vertically downward. About midway of the length of these rods are secured disks h, adjustable vertically by nuts and jam-nuts 7L2 and 71 These disks h are for the purpose of carrying helical springs I and for compressing said springs between themselves and the under side of the top plate of the box-girder K when the heaters are moved vertically from their horizontal position. Near the extreme lower ends of these rods H are located pistons L, which have a certain amount of vertical play or lost motion upon these rods, which is fixed or determined by jam-nuts 7L and 7L5. This piston is entered into a dashpot M, which is carried by the lower plate is of the box-girder K. This dash-pot is an airtight fit upon the piston L only for the lower part of its vertical height, the upper part being of considerably larger internal diameter than the external diameter of the piston L, which is kept axially central therewith and guided into the lower part of the dash-pot by the ribs m, Fig. 5.

Situated beneath the heaters A and the bars D, previously referred to, is an inclined perforated plate or screen N, which is provided with suitable-sized openings a, or of suitable mesh. Situated beneath that part of this screen N which is nearest underthe rearward ends of the heaters A and the bars D are the forward ends of another set of bars 0 and heaters P, similar to heaters A and bars D, which are carried and reciprocated in asimilar manner and by similar means as those previously described; but this second set of heaters and bars are of less width and are placed nearer together, thus having less open space between them than the first set. Below these again is placed another inclined plate or screen or perforated plate Q, similar to the screen or perforated plate N, situated beneath the firstset of beaters,and bars and below the lower end of this screen may he placed other sets of heaters, bars, and screens of constantly-decreasing widths and openings, as may be desired.

Below the two sets of heaters, bars, and screens specifically described is placed an inclined plate R at a slightly-greater inclination than the inclined screens N and Q, to which is to be imparted a slight jogging movement by any suitable means. This joggled inclined plate is common to machines of this kind and is not claimed as new or as an essential part of this mechanism, so it is not more minutely described. It is also obvious that the plate could be extended under any number of sets of these heaters, bars, and screens. Projecting over and leading onto the upper forward ends of the heaters A and bars D is a spout S for the purpose of conveying ore to them to be disintegrated.

The operation of this mechanism is as follows: Ore having been placed in the spout S by anysuitahle means, it is deposited therefrom upon the upper side of the reciprocating bars D. By this reciprocation it is moved forward until it is brought under the descending ends of the heaters A,which pulverize and separate the ore until it is small enough to pass down between the bars D. It is then deposited upon the perforated inclined plate or screen N. Such particles as can pass through the perforations or openings of the mesh in this screen are then allowed to fall down farther upon the joggled plate R and by this means conveyed to the bottom of the machine. The larger particles of ore, which will not pass through the perforations in the plate N, are deposited by gravitation upon the tops of the next set of horizontal reciprocating bars 0 and by them conveyed to the descending edges of the second set of heaters P, where a like operation is performed. The vertical projections a upon the upper side of the heaters A and P are to prevent the ore from pass ing over upon the next succeeding sets of bars and heaters until it has been broken up small enough to have passed down between the bars D and 0. When the heaters A and P are moved upward by the action of the cams c, depressing the rearward projecting part a of these heaters, the springs I are compressed between the disks h, carried by the depending rods H, and the top plates 7a of the boxgirder K. Thus the energy stored up in these compressed springs causes the forward end of these heaters to descend rapidly after their rearward projections have been released by the nose of the cams 0, thus causing these heaters to strike the particles of ore interposed beneath them and the tops of the bars D and O a sharp quick blow. To prevent these heaters A and P from descending too far and wedging between bars D and O and otherwise rendering them liable to breakage, the pistons L, also axially located upon rods H, are entered into dash-pots M. By reason, however, of the vertical play which these pistons L have upon this rod' II, caused by the space between the two sets of jam-nuts 7L4 and 7L5, the heaters A and P are allowed to descend until nearly in a horizontal position before these pistons are entered into the tightly-fitting lower portion of the dash-pot by being brought up against the upper set of jam-nuts if. It will readily be seen that the exact relation of these pistons L to the position of the heaters A and P can be adjusted by these jamnuts 7L and 7t5 to accomplish the best results.

Having now fully described the construction and operation of this machine for mechanical disintegration, what I desire to protect and secure by Letters Patent is as follows:

1. Mechanism for the mechanical disintegration of ores, consisting of hinged risingand-falling heaters alternately disposed with reciprocating bars, both having oppositelyinclined sides adjacent to one another, the narrower edges being the working faces, sub stantially as described.

2. Mechanism for the mechanical disintegration of ores, consisting of hinged risingand-falling heaters alternately disposed with reciprocating bars, both having oppositelyinclined sides provided with grooves inclined at opposite angles, substantially as described.

3. Mechanism for the mechanical disintegration of ores, consisting of hinged risingand-falling heaters, alternately disposed with reciprocating bars, provided with one or more collars or distance-pieces between them, for the lateral adjustment of spaces between said heaters and bars, substantially as described.

4. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and-falling heaters, alternately disposed with horizontal bars reciprocated both vertically and horizontally, substantially as described.

5. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and -fallin g heaters alternately disposed With horizontal bars, said bars being reciprocated both vertically and horizontally in opposite directions one to another, substantially as described.

6. In a machine for the mechanical disintegration of ores, the combination of two or more sets of hinged rising-and-falling heaters and horizontal bars and inclined planes, so located with reference to each other that. the material passing between the first set of heaters and bars is readily deposited by means of the inclined planes, upon the second set of heaters and bars, substantially as described.

7. In a machine for the mechanical disintegration of ores, the combination of two or more sets of hinged rising-and-falling heaters and horizontal bars reciprocated both vertically and horizontally having one or more lateral adjustment-collars of different widths between them, so that the lower sets of heaters and bars interpose narrower spaces for the reception of materials than the set of heaters and bars immediately above and preceding them, substantially as described.

8. In a machine for the mechanical disintegration of ores, having two or more sets of hinged rising-and-falling heaters andhorizontal bars, reciprocated both vertically and horizontally, inclined perforated screens or plates situated beneath each set of heaters and bars, with the lower edge of this'screen projecting over and above the next succeeding set of heaters and bars so as to deposit the coarser materials falling upon said screen from one set of bars upon the next succeeding set of bars, substantially as described.

9. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and-falling heaters, A, A, A A and, P, P, P P having vertical projections, a upon the upper rearward portion thereof for the purpose of preventing materials passing over the rearward ends of these heaters and compelling it to pass downward between the horizontal bars, D, D, and, P, and, P, sub stantially as described.

10. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and-falling heaters, A, A, A A and, P, P, P P supported on stationary shafts,

'B, actuated by cams, c, revolved by shaft, 0,

which is driven by any suitable means; said bars having vertical depending rods, H,-which pass through upper member, 70, of the trans verse box-girders, K,,attached to the frame of the machine carrying disks, h, supportingsprings, I, in compression between said disks, h, and upper member, is, of transverse girders, K, and which are further compressed by this vertical movement of these heaters, substantially as described.

11. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and-falling heaters, A, A, A ,,A and, P, P, P P vertical depending rods, I'I, hinged to the under side thereof, these rods carrying vertically-adj ustahle pistons, L, axially centered in stationary dash-pots, M, lo cated on lower member, 7a, of transverse girders, K, substantially as described.

12. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and-falling heaters, A, A, A A and, P, P, P P the vertically-depending rods, 'I-I, hinged to the under side thereof, carrying vertically-adjustable pistons, L, said pistons have vertical lost motion upon the pistonrods thereof, said lost motion being controlled by the nuts, b and, h substantially as described.

13. In a machine for the mechanical disintegration of ores, the combination of hinged rising-and-falling heaters, A, A, A A and, P, P, P P vertically-depending rods, II, hinged to the under side thereof, carrying vertically-adj ustable pistons, L; said pistons having lost motion upon the piston-rods thereof, and axially centered in stationary dash-pots, M, supported on transverse girders, K; the lower part of dash-pots, M, being an air-tight fit and the upper part being of considerably larger internal diameter than the external diameter of the piston, L, for the purpose set forth, substantially as described.

In testimony whereof I, DANIEL OKEEFE', have signed my name to this specification in the presence of two subscribing witnesses, on this 11th day of January, A. D. 1898.

DANIEL OKEEFE.

WVitnesses: v

JOHN MURRAY MARSHALL, -WM. 0. WEBBER. 

